I originally got the error when submitting form, page or document doesn't exist.

I tried it and when it works, it's slick. I had difficulty in slow synchs and pictures not showing up during one session, but showing up in the next. I'm waiting on a response from support where I had a total lockup of the mobile device (1st ever) and when I restarted the clock was gone and two other apps worked in…

Very nice. . . simple, functional.

Well, it seems to be official, since the Google-Firefox-Extensions group released a post I made considerably after the Browser Sync one, it appears they won't be posting my rant about Google Browser Sync in the group. If you are really interested, you can read much of it here.

As a follow up to the Google Browser Sync discontinuance, there has been an avalanche of support on the Google-Firefox-Extensions discussion group and in other places on the web. The group is moderated and it appears that Google may be trying to do some damage control.